"Darling Nikki" is a song produced, arranged, composed and performed by Prince and originally released on his Grammy Award-winning 1984 album, Purple Rain. Though the song was not released as a single, it gained wide notoriety for its sexual lyrics. Partly because of the lyrical content of "Darling Nikki", Tipper Gore founded the Parents Music Resource Center,[1][2] which eventually led to the use of "Parental Advisory" stickers and imprints on album covers.[3] Compared with the slick production of the other songs on the album, "Darling Nikki" was deliberately engineered to have a raw, live feel.

The song tells the story of a "sex fiend" named Nikki who seduces the singer. In the film Purple Rain, the song is directed toward Apollonia Kotero's character when she decides to work with Prince's character's rival, played by Morris Day.

Near the end of the song, the music stops into the sound of rain and wind. There is singing, but played in reverse. The vocals, unreversed, are Prince singing,

A circulating outtake of "Darling Nikki" contains an instrumental subdued section in the middle of keyboard onslaught at the end of the song. Also, it does not have the backmasking segment tacked on to the end; instead, Prince performs an extended hard guitar solo devoid of any other instruments.